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Finding the Fourth Proportional to 333,739.44, 500,604.57 and 81,021.87

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Solution

The fourth proportional to 333,739.44, 500,604.57 and 81,021.87 is: 121,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,739.44 : 500,604.57 = 81,021.87 : x
  2. Step 2: Convert to fraction form
    333,739.44/500,604.57 = 81,021.87/x
  3. Step 3: Cross multiply
    333,739.44x = 500,604.57 × 81,021.87
  4. Step 4: Simplify right side
    333,739.44x = 40,559,918,391.95
  5. Step 5: Solve for x
    x = 40,559,918,391.95/333,739.44
  6. Step 6: Final answer
    x = 121,531.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.